EP3176874B1 - Antenna apparatus and device - Google Patents

Antenna apparatus and device Download PDF

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Publication number
EP3176874B1
EP3176874B1 EP14900869.0A EP14900869A EP3176874B1 EP 3176874 B1 EP3176874 B1 EP 3176874B1 EP 14900869 A EP14900869 A EP 14900869A EP 3176874 B1 EP3176874 B1 EP 3176874B1
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EP
European Patent Office
Prior art keywords
antenna
pcb
disposed
antenna radiator
radiator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14900869.0A
Other languages
German (de)
French (fr)
Other versions
EP3176874A1 (en
EP3176874A4 (en
Inventor
Qing Liu
Yuzhen Zhang
Yao LAN
Dingjie Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of EP3176874A1 publication Critical patent/EP3176874A1/en
Publication of EP3176874A4 publication Critical patent/EP3176874A4/en
Application granted granted Critical
Publication of EP3176874B1 publication Critical patent/EP3176874B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/18—Handling of layers or the laminate
    • B32B38/1825—Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
    • B32B38/1833—Positioning, e.g. registration or centering
    • B32B38/1841—Positioning, e.g. registration or centering during laying up
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/67005—Apparatus not specifically provided for elsewhere
    • H01L21/67011—Apparatus for manufacture or treatment
    • H01L21/67144—Apparatus for mounting on conductive members, e.g. leadframes or conductors on insulating substrates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364—Creating multiple current paths
    • H01Q5/371—Branching current paths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/378—Combination of fed elements with parasitic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure

Description

    TECHNICAL FIELD
  • Embodiments of the present invention relate to communications technologies, and in particular, to an antenna apparatus and a device.
    • BACKGROUND
  • As communications technologies develop, various wireless terminal products are increasingly popularly used. When enjoying various conveniences brought by wireless communications devices, the public also gradually impose higher requirements on portability of a terminal, that is, the terminal is increasingly small in size. As a significant part of a terminal product, an antenna is necessarily developing toward miniaturization and needs to support multiple frequency bands in a global market. In addition, application of a Long Term Evolution multiple-input multiple-output (Long Term Evolution Multi-input Multi-output, LTE MIMO for short) technology also requires integration of multiple antennas in a single terminal. Therefore, how to implement a miniaturized and high bandwidth antenna becomes a challenge in the industry.
  • In a current printed circuit board (Printed Circuit Board, PCB for short) antenna technology, a relatively small size results in relatively narrow bandwidth and cannot meet a requirement of covering high bandwidth.
  • CN 103 915 682 A discloses a printed circuit board antenna and a printed circuit board. The printed circuit board antenna comprises a feed portion, a coupling interdigital portion and a grounding portion, wherein the feed portion is provided with at least one first branch circuit, the coupling interdigital portion is provided with at least one second branch circuit, a gap is formed between the first branch circuit and the second branch circuit, a gap is formed between the grounding portion and the feed portion, a gap is formed between the grounding portion and the coupling interdigital portion, an opening is formed in the grounding portion, and a feed point of the feed portion extends out of the opening.
  • EP 2 615 684 A2 discloses an antenna apparatus for a mobile terminal. The antenna apparatus includes an antenna pattern, a first electric circuit and a second electric circuit respectively connected between both ends of the antenna pattern and a system ground, and a third electric circuit disposed between the antenna pattern and a feeding line, wherein the first electric circuit and the second electric circuit extend electrical wavelengths of the antenna pattern and the third electric circuit increases input impedance matching.
  • EP 3 001 503 A1 discloses an antenna and a terminal, where the antenna includes: a first antenna branch, printed on a first surface of a circuit board, where the first antenna branch includes a first sub-branch; a grounding branch, printed on the first surface, where the grounding branch includes a grounding sub-branch, the first sub-branch and the grounding sub-branch are staggered to form a gap, and the first antenna branch and the grounding branch are mutually coupled through the gap; a second antenna branch, printed on a second surface of the circuit board, where the second surface and the first surface are two opposite surfaces of the circuit board; and a first feed, electrically connected to the first antenna branch, wherein the second antenna branch is electrically connected to a metal via hole on the circuit board, and the metal via hole is electrically connected to the first feed; wherein the first antenna branch, the grounding branch, and the first feed form a first antenna, which is configured to generate a first resonance frequency; and wherein the first antenna branch, the second antenna branch, and the first feed form a second antenna, which is configured to generate a second resonance frequency.
    • SUMMARY
  • Embodiments of the present invention provide an antenna apparatus and a device to resolve a problem of how a miniaturized antenna can cover high bandwidth.
  • According to a first aspect, an embodiment of the present invention provides an antenna apparatus that includes: an antenna radiator, at least one antenna trough, a feedpoint, and at least one first protruding metal strip;
    a printed circuit board, PCB metal layer (109) is disposed around the antenna apparatus;
    the at least one antenna trough is disposed on the antenna radiator;
    the at least one antenna trough extends from a bottom edge to near a top edge of the antenna radiator;
    the feedpoint is further disposed on the antenna radiator, and the feedpoint is disposed at an end of the bottom edge of the antenna radiator and is near a side edge of the antenna radiator; the at least one first protruding metal strip is inserted in the antenna trough and is separated from the antenna radiator;
    an end of the at least one first protruding metal strip is connected to the PCB metal layer; and
    the feedpoint connects the antenna radiator and the PCB metal layer.
  • In a first possible implementation manner of the first aspect, the apparatus further includes at least one second protruding metal strip;
    the at least one second protruding metal strip is disposed on another side edge of the antenna radiator; and
    the second protruding metal strip extends in a direction pointing to the antenna radiator and is not connected to the antenna radiator.
  • According to a second aspect, an embodiment of the present invention provides a device that includes a printed circuit board PCB and the antenna apparatus according to the first aspect; wherein
    the antenna apparatus is disposed in a position near an edge of the PCB, a PCB metal layer is disposed around the antenna apparatus, and the PCB metal layer is on the PCB; and
    the side edge of the antenna radiator is near the edge of the PCB.
  • In a first possible implementation manner of the second aspect, the antenna apparatus further includes at least one second protruding metal strip;
    the at least one second protruding metal strip is disposed on another side edge of the antenna radiator;
    the at least one second protruding metal strip is separated from the antenna radiator;
    an end of the at least one second protruding metal strip points to the antenna radiator; and
    the other end of the at least one second protruding metal strip is connected to the PCB metal layer.
  • With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, at least one PCB trough is disposed in a position opposite to an opening of the antenna trough, and the at least one PCB trough is disposed on the PCB metal layer.
  • In the antenna apparatus and the device that are provided in the embodiments of the present invention, at least one antenna trough is disposed on an antenna radiator, and the at least one antenna trough can extend a path along which a current flows on the antenna radiator, and shift a low-frequency resonance point of an antenna toward a lower frequency. In this way, in a case of a determined frequency band, a size of the antenna can be reduced to achieve miniaturization. A feedpoint is disposed in a position that is at an end of a bottom edge of the antenna radiator and that is near a side edge of the antenna radiator. In addition, at least one first protruding metal strip is disposed in the antenna trough, and the at least one first protruding metal strip can enable the antenna to generate a new resonance point in a high frequency band, so as to widen a frequency band in the high frequency band of the antenna, effectively increase bandwidth of the antenna, and resolve a problem of how to cover high bandwidth when the antenna is relatively small.
    • BRIEF DESCRIPTION OF DRAWINGS
  • To describe the technical solutions in the embodiments of the present invention or in the prior art more clearly, the following briefly describes the accompanying drawings required for describing the embodiments or the prior art. Apparently, the accompanying drawings in the following description show merely some embodiments of the present invention, and persons of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts.
    • FIG. 1 is a schematic structural diagram of an antenna apparatus according to an embodiment of the present invention;
    • FIG. 2A is a schematic structural diagram of an antenna radiator and a feedpoint according to an embodiment of the present invention;
    • FIG. 2B is another schematic structural diagram of an antenna radiator and a feedpoint according to an embodiment of the present invention;
    • FIG. 3 is a schematic structural diagram of an antenna apparatus according to another embodiment of the present invention;
    • FIG. 4 is a schematic structural diagram of an antenna device according to an embodiment of the present invention; and
    • FIG. 5 is a schematic structural diagram of an antenna device according to another embodiment of the present invention.
    DESCRIPTION OF EMBODIMENTS
  • The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are merely some but not all of the embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
  • FIG. 1 is a schematic structural diagram of an antenna apparatus 100 according to an embodiment of the present invention. As shown in FIG. 1, the apparatus 100 in this embodiment may include: an antenna radiator 101, at least one antenna cable trough 102, a feedpoint 103, and at least one first protruding metal strip 104.
  • The at least one antenna cable trough 102 is disposed on the antenna radiator 101. The at least one antenna cable trough 102 extends along a top edge 101A to a bottom edge 101B of the antenna radiator 101. The feedpoint 103 is further disposed on the antenna radiator 101, and the feedpoint 103 is disposed at an end of the bottom edge 101B of the antenna radiator 101 and is near a side edge 101C of the antenna radiator 101. The at least one protruding metal strip 104 is inserted in a corresponding antenna cable trough 102, and is separated from the antenna radiator 101.
  • A length and a width of the antenna radiator 101 are set according to an actual requirement. This is not limited in this embodiment.
  • One or more antenna cable troughs 102 are disposed on the antenna radiator 101, and the antenna cable trough 102 extends along the top edge 101A to the bottom edge 101B of the antenna radiator 101. A function of the antenna cable trough 102 is to change a path, of a current, along which the current flows on the antenna radiator 101, and extend the path of the current, so as to shift a low-frequency resonance point of an antenna toward a lower frequency resonance point. In this way, in a case of a determined frequency band, a size of the antenna can be reduced to achieve miniaturization. Specifically, a quantity of antenna cable troughs 102 or the length or the width of the antenna cable trough 102 may be set according to an actual requirement. This is not limited in this embodiment.
  • The feedpoint 103 is further disposed in a position that is at the end of the bottom edge 101B of the antenna radiator 101 and that is near the side edge 101C of the antenna radiator 101.
  • FIG. 2A is a schematic structural diagram of an antenna radiator 101 and a feedpoint 103 according to an embodiment of the present invention. As shown in FIG. 2A, an upper edge of the antenna radiator 101 is a top edge 101A, and a lower edge of the antenna radiator 101 is a bottom edge 101B. Three antenna cable troughs 102 divide the antenna radiator 101 into four strip areas. The bottom edge 101B of the antenna radiator 101 is divided into four disconnected segments by the three antenna cable troughs 102. The feedpoint 103 is disposed on a leftmost end of a lower part of the antenna radiator 101, that is, a leftmost end of the bottom edge 101B of the antenna radiator 101. A specific position is shown as a position of 103A, 103B, or 103C in FIG. 2A. The feedpoint 103 is disposed in such a manner to reduce an electromagnetic effect, caused by an antenna in operation, on another component around the antenna.
  • FIG. 2B is another schematic structural diagram of an antenna radiator 101 and a feedpoint 103 according to an embodiment of the present invention. As shown in FIG. 2B, an upper edge of the antenna radiator 101 is a bottom edge 101B, and a lower edge of the antenna radiator 101 is a top edge 101A. Three antenna cable troughs 102 divide the antenna radiator 101 into four strip areas. The bottom edge 101B of the antenna radiator 101 is divided into four disconnected segments by the three antenna cable troughs 102. The feedpoint 103 is disposed on a rightmost end of an upper part of the antenna radiator 101, that is, a rightmost end of the bottom edge 101B. A specific position is shown as a position of 103A, 103B, or 103C in FIG. 2B. The feedpoint 103 is disposed in such a manner to reduce an electromagnetic effect, caused by an antenna in operation, on another component around the antenna.
  • The at least one first protruding metal strip 104 is disposed in the antenna cable trough 102. Specifically, the first protruding metal strip 104 is inserted in the antenna cable trough 102 and is separated from the antenna radiator 101. The first protruding metal strip 104 can generate a new resonance point in a high frequency band of an antenna, so as to widen a frequency band in the high frequency band of the antenna and effectively increase bandwidth of the antenna. A quantity of first protruding metal strips 104 or a length or a width of the first protruding metal strip 104 may be set according to an actual requirement. This is not limited in this embodiment.
  • In this embodiment of the present invention, at least one antenna cable trough is disposed on an antenna radiator, and the at least one antenna cable trough can extend a path along which a current flows on the antenna radiator, and shift a low-frequency resonance point of an antenna toward a lower frequency. In this way, in a case of a determined frequency band, a size of the antenna can be reduced to achieve miniaturization. A feedpoint is disposed in a position that is at an end of a bottom edge of the antenna radiator and that is near a side edge of the antenna radiator. In addition, at least one first protruding metal strip is disposed in the antenna cable trough, and the at least one first protruding metal strip can enable the antenna to generate a new resonance point in a high frequency band, so as to widen a frequency band in the high frequency band of the antenna, effectively increase bandwidth of the antenna, and resolve a problem of how to cover high bandwidth when the antenna is relatively small.
  • FIG. 3 is a schematic structural diagram of an antenna apparatus 200 according to another embodiment of the present invention. As shown in FIG. 3, on the basis of the antenna apparatus 100 shown in FIG. 1, the antenna apparatus 200 in this embodiment may further include at least one second protruding metal strip 105. The at least one second protruding metal strip 105 is disposed on another side edge 101D, far away from the feedpoint 103, of the antenna radiator 101. The at least one second protruding metal strip 105 is separated from the antenna radiator 101, and an end 105A of the at least one second protruding metal strip 105 points to the another side edge 101D of the antenna radiator 101. The at least one second protruding metal strip 105 is disposed in such a manner to extend a path along which a current that induces antenna resonance flows around the antenna radiator 101, and shift a low-frequency resonance point of an antenna toward a lower frequency. In this way, in a case of a determined frequency band, a size of the antenna can be further reduced to achieve miniaturization. A quantity of second protruding metal strips 105, a length or a width of the second protruding metal strip 105, and a distance between the second protruding metal strip 105 and the another side edge 101D of the antenna radiator 101 may be set according to an actual requirement. This is not limited in this embodiment.
  • FIG. 4 is a schematic structural diagram of an antenna device 300 according to an embodiment of the present invention. As shown in FIG. 4, the antenna device 300 in this embodiment may include a PCB 106. An antenna apparatus 301 is disposed in a position near an edge of the PCB 106, a PCB metal layer 109 is disposed around the antenna apparatus 301, and the PCB metal layer 109 is on the PCB 106.
  • The antenna apparatus 301 includes: an antenna radiator 101, at least one antenna cable trough 102, a feedpoint 103, and at least one first protruding metal strip 104.
  • The at least one antenna cable trough 102 is disposed on the antenna radiator 101. The at least one antenna cable trough 102 extends along a top edge 101A to a bottom edge 101B of the antenna radiator 101. The feedpoint 103 is further disposed on the antenna radiator 101, and the feedpoint 103 is disposed at an end of the bottom edge 101B of the antenna radiator 101 and is near a side edge 101C of the antenna radiator 101. The side edge 101C is near the edge of the PCB 106. The feedpoint 103 connects the antenna radiator 101 and the PCB metal layer 109. The at least one first protruding metal strip 104 is inserted in the antenna cable trough 102, and is separated from the antenna radiator 101. An end of the at least one first protruding metal strip 104 is connected to the PCB metal layer 109.
  • The antenna apparatus 301 is disposed in the position near the edge of the PCB 106, and the PCB metal layer 109 is disposed around the antenna apparatus 301 and on the PCB 106. A length and a width of the antenna radiator 101 are set according to an actual requirement. This is not limited in this embodiment.
  • One or more antenna cable troughs 102 are disposed on the antenna radiator 101, and the antenna cable trough 102 extends along the top edge 101A to the bottom edge 101B of the antenna radiator 101. A function of the antenna cable trough 102 is to change a path, of a current, along which the current flows on the antenna radiator 101, and extend the path of the current, so as to shift a low-frequency resonance point of an antenna toward a lower frequency. In this way, in a case of a determined frequency band, a size of the antenna can be reduced to achieve miniaturization. Specifically, a quantity of antenna cable troughs 102 or a length or a width of the antenna cable trough 102 may be set according to an actual requirement. This is not limited in this embodiment.
  • The feedpoint 103 is further disposed in a position that is at the end of the bottom edge 101B of the antenna radiator 101 and that is near the side edge 101C of the antenna radiator 101. The feedpoint 103 connects the antenna radiator 101 and the PCB metal layer 109. Specifically, the feedpoint 103 is disposed at a leftmost end of a lower part of the antenna radiator 101, that is, a leftmost end of the bottom edge 101B of the antenna radiator 101, as shown in FIG. 4. The feedpoint 103 is disposed in such a manner to reduce an electromagnetic effect, caused by an antenna in operation, on another component around the antenna. In addition, the side edge 101C of the antenna radiator 101 is near the edge of the PCB 106.
  • The at least one first protruding metal strip 104 is disposed in the antenna cable trough 102. Specifically, the first protruding metal strip 104 is inserted in the antenna cable trough 102 and is separated from the antenna radiator 101. An end of the first protruding metal strip 104 is connected to the PCB metal layer 109. The first protruding metal strip 104 can generate a new resonance point in a high frequency band of an antenna, so as to widen a frequency band in the high frequency band of the antenna and effectively increase bandwidth of the antenna. A quantity of first protruding metal strips 104 or a length or a width of the first protruding metal strip 104 may be set according to an actual requirement. This is not limited in this embodiment.
  • On the basis of the foregoing embodiment, at least one second protruding metal strip 105 is further included. The at least one second protruding metal strip 105 is disposed on another side edge 101D, far away from the feedpoint 103, of the antenna radiator 101. The at least one second protruding metal strip 105 is separated from the antenna radiator 101, and an end 105A of the at least one second protruding metal strip 105 points to the another side edge 101D of the antenna radiator 101. The other end 105B of the at least one second protruding metal strip 105 is connected to the PCB metal layer 109. The at least one second protruding metal strip 105 is disposed in such a manner to extend a path along which a current that induces antenna resonance flows around the antenna radiator 101, and shift a low-frequency resonance point of an antenna toward a lower frequency. In this way, in a case of a determined frequency band, a size of the antenna can be further reduced to achieve miniaturization. A quantity of second protruding metal strips 105, a length or a width of the second protruding metal strip 105, and a distance between the second protruding metal strip 105 and the another side edge 101D of the antenna radiator 101 may be set according to an actual requirement. This is not limited in this embodiment.
  • Further, at least one PCB trough 107 is disposed in an edge, opposite to an opening of the antenna cable trough 102, on the PCB metal layer 109. A function of the at least one PCB trough 107 is also to extend the path along which the current that induces antenna resonance flows around the antenna radiator 101, and shift the low-frequency resonance point of the antenna toward the lower frequency. In this way, in the case of a determined frequency band, the size of the antenna can be further reduced to achieve miniaturization.
  • In this embodiment of the present invention, at least one antenna cable trough is disposed on an antenna radiator, a feedpoint is further disposed in a position that is at an end of a bottom edge of the antenna radiator and that is near a side edge of the antenna radiator, and the feedpoint connects the antenna radiator and a PCB metal layer. At least one first protruding metal strip is disposed in the antenna cable trough. In addition, at least one second protruding metal strip is disposed in another side edge, far away from the feedpoint, of the antenna radiator. At least one PCB trough is disposed in an edge, opposite to an opening of the antenna cable trough, on the PCB metal layer. The at least one antenna cable trough, the at least one second protruding metal strip, and the at least one PCB trough are disposed in such a manner to extend paths along which a current that induces antenna resonance flows on the antenna radiator and around the antenna radiator, and shift a low-frequency resonance point of an antenna toward a lower frequency. In this way, in a case of a determined frequency band, a size of the antenna can be reduced to achieve miniaturization. Further, the at least one first protruding metal strip is disposed in the at least one antenna cable trough, which can enable the antenna to generate a new resonance point in a high frequency band, so as to widen a frequency band in the high frequency band of the antenna, effectively increase bandwidth of the antenna, and resolve a problem of how to cover high bandwidth when the antenna is relatively small.
  • FIG. 5 is a schematic structural diagram of an antenna device 400 according to another embodiment of the present invention. As shown in FIG. 5, this embodiment provides a solution and a structure of a new miniaturized printed antenna in a USB interface product, so that an antenna can operate in three frequency bands: 700-960MHz, 1400-1600MHz, and 1710-2700MHz.
  • In the USB interface product, the antenna is printed on a PCB 106 near a USB head 108. A length of the antenna (from a side edge 101C of an antenna radiator 101 to an end 105A of a second protruding metal strip 105) is 10 mm, and a length of the PCB 106 (from a top edge 106A to a bottom edge 106B of the PCB 106) is 25 mm. Three antenna cable troughs 102 are disposed on the antenna radiator 101, and the three antenna cable troughs 102 extend along a top edge 101A to a bottom edge 101B of the antenna radiator 101, that is, an opening direction is opposite to a direction of the USB head 108. The three antenna cable troughs 102 are used to extend a path of a current that induces antenna resonance, shift a low-frequency resonance point of the antenna toward a lower frequency band, and reduce a low-frequency resonance point of the antenna without increasing a size of the antenna, so as to achieve miniaturization of the antenna.
  • The feedpoint 103 is further disposed in a position that is at an end of the bottom edge 101B of the antenna radiator 101 and that is near the side edge 101C of the antenna radiator 101. The feedpoint 103 connects the antenna radiator 101 and the PCB metal layer 109. Specifically, the feedpoint 103 is disposed at a leftmost end of a lower part of the antenna radiator 101, that is, a leftmost end of the bottom edge 101B of the antenna radiator 101, as shown in FIG. 5. The feedpoint 103 is disposed in such a manner to reduce an electromagnetic effect, caused by an antenna in operation, on another component around the antenna. In addition, the side edge 101C of the antenna radiator 101 is near an edge of the PCB 106.
  • A first protruding metal strip 104 is disposed in a middle antenna cable trough 102 in the three antenna cable troughs 102. Specifically, the first protruding metal strip 104 is inserted in the middle antenna cable trough 102 and is separated from the antenna radiator 101. An end of the first protruding metal strip 104 is connected to the PCB metal layer 109. The first protruding metal strip 104 can generate a new resonance point in a high frequency band of the antenna, so as to widen a frequency band in the high frequency band of the antenna and effectively increase bandwidth of the antenna.
  • Five second protruding metal strips 105 are disposed in another side edge 101D, far away from the feedpoint 103, of the antenna radiator 101. Specifically, the five second protruding metal strips 105 are separated from the antenna radiator 101. An end 105A of each of the five second protruding metal strips 105 points to the another side edge 101D of the antenna radiator 101, and the other end 105B is connected to the PCB metal layer 109. The five second protruding metal strips 105 may extend a path along which a current that induces antenna resonance flows around the antenna radiator 101, and shift the low-frequency resonance point of the antenna toward the lower frequency band. In this way, in a case of a determined frequency band, the size of the antenna can be further reduced to achieve miniaturization.
  • Further, four PCB troughs 107 are disposed in an edge, opposite to an opening of the antenna cable trough 102, on the PCB metal layer 109. A function of the four PCB troughs 107 is also to extend the path along which the current that induces antenna resonance flows around the antenna radiator 101, and shift the low-frequency resonance point of the antenna toward the lower frequency band. In this way, in the case of a determined frequency band, the size of the antenna can be further reduced to achieve miniaturization.
  • In this embodiment of the present invention, in a USB interface product, an antenna is printed, near a USB, on a PCB; three antenna cable troughs are disposed on an antenna radiator; a feedpoint is further disposed in a position that is at an end of a bottom edge of the antenna radiator and that is near a side edge of the antenna radiator, and the feedpoint connects the antenna radiator and a PCB metal layer; a first protruding metal strip is disposed in a middle antenna cable trough in the three antenna cable troughs; in addition, five second protruding metal strip are disposed on another side edge, far away from the feedpoint, of the antenna radiator; and four PCB troughs are disposed on an edge, opposite to openings of the antenna cable troughs, on the PCB metal layer. The three antenna cable troughs, the five second protruding metal strips, and the four PCB troughs are disposed in such as manner to extend paths along which a current that induces antenna resonance flows on the antenna radiator and around the antenna radiator, and shift a low-frequency resonance point of an antenna toward a lower frequency band. In this way, in a case of a determined frequency band, a size of the antenna can be reduced to achieve miniaturization. In addition, the first protruding metal strip is disposed in the middle antenna cable trough in the three antenna cable troughs, which can generate a new resonance point in a high frequency band for the antenna, so as to widen a frequency band in the high frequency band of the antenna, effectively increase bandwidth of the antenna, and resolve a problem of how to cover high bandwidth when the antenna is relatively small. A structure of an antenna apparatus is designed in the USB interface product, so as to implement, on a premise of a small terminal, an operation requirement for multiple frequency bands and a wide frequency band in the antenna apparatus built in the terminal, for example, covering three frequency bands including 700-960MHz, 1400-1600MHz, and 1710-2700MHz, and effectively resolving a problem of how a small printed antenna can cover high bandwidth.
  • Finally, it should be noted that the foregoing embodiments are merely intended for describing the technical solutions of the present invention, but not for limiting the present invention. Although the present invention is described in detail with reference to the foregoing embodiments, persons of ordinary skill in the art should understand that they may still make modifications to the technical solutions described in the foregoing embodiments or make equivalent replacements to some or all technical features thereof, without departing from the scope of the technical solutions of the embodiments of the present invention.

Claims (5)

  1. An antenna apparatus, comprising: an antenna radiator (101), at least one antenna trough (102), a feedpoint (103), and at least one first protruding metal strip (104); wherein
    a printed circuit board, PCB metal layer (109) is disposed around the antenna apparatus;
    the at least one antenna trough (102) is disposed on the antenna radiator (101);
    the at least one antenna trough extends from a bottom edge (101B) to near a top edge (101A) of the antenna radiator (101);
    the feedpoint (103) is further disposed on the antenna radiator (101), and the feedpoint is disposed at an end of the bottom edge (101B) of the antenna radiator (101) and is near a side edge (101C) of the antenna radiator (101);
    the at least one first protruding metal strip (104) is inserted in the antenna trough (102) and is separated from the antenna radiator (101); and
    an end of the at least one first protruding metal strip (104) is connected to the PCB metal layer (109);
    characterized in that
    the feedpoint (103) connects the antenna radiator (101) and the PCB metal layer (109).
  2. The antenna apparatus according to claim 1, further comprising: at least one second protruding metal strip (105), wherein the second protruding metal strip is disposed in a position of another side edge (101D) of the antenna radiator (101); and
    the second protruding metal strip (105) extends in a direction pointing to the antenna radiator (101) and is not connected to the antenna radiator.
  3. A device, comprising: a printed circuit board, PCB (106) and the antenna apparatus according to claim 1; wherein
    the antenna apparatus is disposed in a position near an edge of the PCB (106), a PCB metal layer (109) is disposed around the antenna apparatus (101), and the PCB metal layer (109) is on the PCB; and
    the side edge (101C) of the antenna radiator is near the edge of the PCB.
  4. The device according to claim 3, wherein the antenna apparatus (101) further comprises at least one second protruding metal strip (105);
    the at least one second protruding metal strip (105) is disposed on another side edge (101D), of the antenna radiator (101);
    the at least one second protruding metal strip (104) is separated from the antenna radiator (101);
    an end (105A) of the at least one second protruding metal strip (105) points to the antenna radiator; and
    the other end (105B) of the at least one second protruding metal (105) strip is connected to the PCB metal layer (109).
  5. The device according to claim 3 or 4, wherein at least one PCB trough (107) is disposed in a position opposite to an opening of the antenna trough (102), and the at least one PCB trough (107) is disposed on the PCB metal layer (109).
EP14900869.0A 2014-08-28 2014-08-28 Antenna apparatus and device Active EP3176874B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/085401 WO2016029404A1 (en) 2014-08-28 2014-08-28 Antenna apparatus and device

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EP3176874A1 EP3176874A1 (en) 2017-06-07
EP3176874A4 EP3176874A4 (en) 2017-08-16
EP3176874B1 true EP3176874B1 (en) 2020-07-15

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US (1) US10141652B2 (en)
EP (1) EP3176874B1 (en)
CN (1) CN105706303B (en)
WO (1) WO2016029404A1 (en)

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CN111541051B (en) * 2020-05-11 2022-01-25 Oppo广东移动通信有限公司 Antenna and communication device

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TWI260817B (en) * 2005-05-05 2006-08-21 Ind Tech Res Inst Wireless apparatus capable to control radiation patterns of antenna
CN101425619B (en) * 2007-10-31 2012-11-21 旭丽电子(广州)有限公司 Dual frequency short circuit bipolar antenna
CN101465465B (en) * 2007-12-20 2013-04-03 智易科技股份有限公司 Double-frequency antenna
JP5777885B2 (en) * 2008-01-08 2015-09-09 エース テクノロジーズ コーポレーション Multi-band built-in antenna
EP2421093A4 (en) * 2009-04-14 2012-09-05 Ace tech corp Wideband antenna using coupling matching
EP2284946B1 (en) * 2009-07-17 2013-11-20 BlackBerry Limited Multi-slot antenna and mobile device
TWI451631B (en) 2010-07-02 2014-09-01 Ind Tech Res Inst Multiband antenna and method for an antenna to be capable of multiband operation
US8947302B2 (en) * 2010-11-05 2015-02-03 Apple Inc. Antenna system with antenna swapping and antenna tuning
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Also Published As

Publication number Publication date
US10141652B2 (en) 2018-11-27
CN105706303B (en) 2019-06-28
CN105706303A (en) 2016-06-22
EP3176874A1 (en) 2017-06-07
EP3176874A4 (en) 2017-08-16
US20170288310A1 (en) 2017-10-05
WO2016029404A1 (en) 2016-03-03

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